Problem 1
In flowering plant, we need to transport (a) Water and mineral nutrients (b) Organic nutrients (c) Plant growth regulators (d) All of these
Problem 2
For covering a small distance, the substances move by (a) Diffusion (b) Cytoplasmic streaming (c) Active transport (d) All of these
Problem 3
Transport over longer distance is known as (a) Translocation (b) Transformation (c) Transduction (d) Diffusion
Problem 4
Which of the following undergoes multidirectional transport? (a) Water (b) Mineral nutrients (c) Organic nutrients (d) Both (b) and (c)
Problem 5
Transport of which substance is essentially unidirectional in xylem? (a) Water (b) Mincral nutricnts (c) Organic nutricnts (d) Both (a) and (b)
Problem 6
Select the correct statement from the following: (a) Mineral nutrients taken up by the roots and transported upward into stem, leaves and growing region. (b) When a plant part undergoes senescence, the nutrient always remain in the senescence part and gets lost from the plant. (c) In flowering plant the complex traffic of compound in unorderly manner moving in different direction. (d) All hormones shows polarised movement.
Problem 7
Diffusion can occur between (a) One part of cell to other part (b) Cell to cell (c) Intercellular space to outside of leaf (d) All of these
Problem 8
The only mode of gaseous movement in plant body is (a) Diffusion (b) Osmosis (c) Facilitated transport (d) All of these
Problem 9
Which of the following is incorrect about diffusion? (1) Molecules move in random fashion. (2) It occurs from higher to lower concentration. (3) It is a slow process. (4) It does not depend on living system. (5) Protein carriers are required. (6) It is a passive process. (a) Only 1 and 5 (b) Only 5 (c) 1,3 and 5 only (d) Only 4
Problem 10
Diffusion rate is affected by (a) Concentration gradient (b) Membrane permeability through which it occur (c) Pressure and temperature (d) All of these
